Nik Wallenda speaks to the media in Niagara Falls, Canada, Wednesday, June 13, 2012. On Friday night Wallenda's attempt at being the first person to walk across the falls on a tightrope will be broadcast on a live ABC special, with CTV carrying it in Canada. The American broadcaster is partly funding Wallenda's walk, but also requested he wear a tether in case something goes wrong. (AP Photo/David Duprey)